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<?php var_dump(preg_grep('/.*/u', ['foo', 'bar'])); echo preg_last_error_msg(), "\n\n"; var_dump(preg_grep('/.*/u', ['foo', hex2bin('ff'), 'bar'])); echo preg_last_error_msg(), "\n\n";
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" } No error array(1) { [0]=> string(3) "foo" } Malformed UTF-8 characters, possibly incorrectly encoded
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29.68 ms | 1137 KiB | 7 Q